const merge = require('webpack-merge'); const config = require('./webpack.config.js'); module.exports = (_env, argv) => { const port = argv.port || 3001; return merge(config, { mode: 'development', devServer: { publicPath: '/dist/', proxy: { '/extensions': { target: `http://localhost:${port}`, pathRewrite: { '^/extensions': '/public/extensions' } } }, port, } }); };